8/11/2019 510_PC_OCT04_PTR_D-10_PSJ

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4 15 September 2004

Dammam, Saudi Arabia

API 510 PREPARATORYPoints To Recall Day 10

1. API 576 provides practical guidelines to meet API 510requirements for pressure relieving devices (PRDs. It does not

cover training requirements.

!. Inspection of PRDs is essential for"

a. Protection of equipments and safet# of personnel$. %o determine condition of device itself and

&. Inspection frequenc#"

a. Inspection and s'op maintenance normal frequenc# is

5 #ears (ma). $ut ma# $e up to 10 #ears for clean* non

corrosive* nonfouling medium$. +isual online surve# , 5 #ears ma).

-. afet# valve is popopening valve* used on gases and vapors.Relief valve is /proportional opening valve used on liquids.

afet# relief valves can function $ot' a#s. 2ac34pressurecorrection is done on $alanced safet# relief valves *

5. After t'e valve is removed from service* first action is to c'ec3

its relieving pressure (pop pressure in t'e /as receivedcondition. u$sequentl#* carr# out detailed visual e)amination*

dismantling* cleaning* and lapping of valve seat. et t'e pop at

desired pressure and confirm t'e same at least once. arr# outlea3 test.

6. ea3 test is carried out (at 08 of relieving pressure $#

monitoring air $u$$les appearing per minute under 'ead of 9

and comparing it' acceptance c'art.

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